首页|Low-loss single-mode Ge-As-S-Se glass fiber and its supercontinuum generation for mid-infrared
Low-loss single-mode Ge-As-S-Se glass fiber and its supercontinuum generation for mid-infrared
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NSTL
Elsevier
We report broadband supercontinuum (SC) spectra generated from low-loss single-mode fibers (SMF) based on novel Ge-As-S-Se (GASS) chalcogenide (ChGs) glasses. The step-index fibers (SIF) possess an ultra-low background loss of 0.27 dB/m at wavelength of 2.5 & nbsp;similar to 7.5 mu m were fabricated by an optimized peeled-off extrusion method. SC generation was studied by pumping the fiber with 15 cm and 100 cm at same condition (5 mu m, similar to 150 fs, 1 kHz, 25 mW), respectively. Output SC covering 1.46 similar to 9.32 mu m was obtained in this 15-cm fiber, while a relatively wide output SC spanning from 1.68 to 8.28 mu m was observed in 100-cm fiber. Due to simulated numerical model does not account for higher-order modes at shorter wavelengths, cladding modes, polarization effects etc. Experimental SC spectral profile in the short and long S/Se fibers is slightly different with the simulation analysis. To the best of our knowledge, this is the first report on the performance of GASS fiber.
NSTL
Elsevier
